def manager_by_token(self, token_address):
""" Find the channel manager for `token_address` and return a proxy to
interact with it.
If the token is not already registered it raises `JSONRPCClientReplyError`,
since we try to instantiate a Channel manager with an empty address.
"""
if token_address not in self.token_to_channelmanager:
token = self.token(token_address) # check that the token exists
manager_address = self.default_registry.manager_address_by_token(
token.address)
if manager_address == '':
raise NoTokenManager(
'Manager for token 0x{} does not exist'.format(
(str(token_address).encode('hex'))))
manager = ChannelManager(
self.client,
address_decoder(manager_address),
poll_timeout=self.poll_timeout,
)
self.token_to_channelmanager[token_address] = manager
self.address_to_channelmanager[manager_address] = manager
return self.token_to_channelmanager[token_address]
def manager_by_token(self, token_address):
""" Find the channel manager for `token_address` and return a proxy to
interact with it.
If the token is not already registered it raises `EthNodeCommunicationError`,
since we try to instantiate a Channel manager with an empty address.
"""
if not isaddress(token_address):
raise ValueError('token_address must be a valid address')
if token_address not in self.token_to_channelmanager:
check_address_has_code(
self.client, token_address) # check that the token exists
manager_address = self.manager_address_by_token(token_address)
if manager_address is None:
raise NoTokenManager(
'Manager for token 0x{} does not exist'.format(
token_address.encode('hex')))
manager = ChannelManager(
self.client,
manager_address,
self.startgas,
self.gasprice,
self.poll_timeout,
)
self.token_to_channelmanager[token_address] = manager
self.address_to_channelmanager[manager_address] = manager
return self.token_to_channelmanager[token_address]
def token_network_by_token(self, token_address: typing.TokenAddress):
""" Find the token network for `token_address` and return a proxy to
interact with it.
If the token is not already registered it raises `EthNodeCommunicationError`,
since we try to instantiate a Token Network with an empty address.
"""
if not is_binary_address(token_address):
raise InvalidAddress('Expected binary address format for token')
if token_address not in self.token_to_tokennetwork:
check_address_has_code(
self.client, token_address) # check that the token exists
token_network_address = self.get_token_network(token_address)
if token_network_address is None:
raise NoTokenManager(
'TokenNetwork for token 0x{} does not exist'.format(
hexlify(token_address)), )
token_network = TokenNetwork(
self.client,
token_network_address,
)
self.token_to_tokennetwork[token_address] = token_network
self.address_to_tokennetwork[token_network_address] = token_network
return self.token_to_tokennetwork[token_address]
